[DATEBOOK] Day 4 of the Concacaf Champions League includes a top-of-the-table clash in Group B, where Santos of Mexico hosts Isidro Metapan of El Salvador. In an important clash that the Seattle Sounders will be keeping an eye on, Monterrey of Mexico plays Comunicaciones of Guatemala on Tuesday in Group D. For all the action ...Schedule:Sept. 20Group C Toronto FC vs. Tauro FCGroup D Monterrey vs. Comunicaciones Seattle Sounders vs. Herediano